Laser

Definition

A laser is a device that emits a narrow, intense beam of light through the process of stimulated emission. It produces coherent and monochromatic light.

Related terms

Stimulated Emission:

The process in which an incoming photon triggers the release of additional photons with the same energy and direction.

Coherent Light: Light waves that have consistent phase relationships, meaning they are all in sync with each other.

Monochromatic Light:

Light consisting of only one wavelength or color.